Zootaxa 4059 (1): 096–114 ISSN 1175-5326 (print edition) www.mapress.com/zootaxa/ Article ZOOTAXA Copyright © 2015 Magnolia Press ISSN 1175-5334 (online edition) http://dx.doi.org/10.11646/zootaxa.4059.1.5 http://zoobank.org/urn:lsid:zoobank.org:pub:1FF32C00-C60F-4F54-9100-B97F8B3D6CB0 A new species of Hatchet-faced Treefrog Tschudi (Anura: ) from Quadrilátero Ferrífero, Minas Gerais, southeastern

KATYUSCIA ARAUJO-VIEIRA1,6, JOÃO VICTOR A. LACERDA2, TIAGO L. PEZZUTI2, FELIPE SÁ FORTES LEITE3, CLODOALDO LOPES DE ASSIS4 & CARLOS ALBERTO G. CRUZ5 1División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”-CONICET, Ángel Gallardo 470, C1405DJR, Buenos Aires, Argentina 2Laboratório de Herpetologia, Instituto de Ciências Biológicas, Departamento de Zoologia, Universidade Federal de Minas Gerais, Avenida Antônio Carlos, 6627 Pampulha, 31270-901, Belo Horizonte, Minas Gerais, Brazil 3Universidade Federal de Viçosa, Campus Florestal, Florestal, Minas Gerais, Brazil 4Universidade Federal de Viçosa, Departamento de Biologia , Museu de Zoologia João Moojen, 36570-000, Viçosa, Minas Gerais, Brazil 5Universidade Federal do Rio de Janeiro, Museu Nacional, Rio de Janeiro, Rio de Janeiro, Brazil 6Corresponding author. E-mail: [email protected]

Abstract

A new species of Sphaenorhynchus is described from the Municipality of Mariana, State of Minas Gerais, Brazil. It is characterized by the vocal sac moderately developed, single, subgular, with longitudinal folds; white canthal and dorso- lateral lines delimited below by a dorsolateral black line from the tip of snout extending beyond the eye to gradually dis- appearing up to the flanks; and premaxilla and maxilla almost completely edentulous, each bearing 1–5 extremely small teeth. It is most similar with Sphaenorhynchus orophilus, from which it can be distinguished by having a less robust fore- arm in males; glandular subcloacal dermal fold; premaxilla and maxilla almost completely edentulous; and larvae with large marginal papillae in the oral disc. The new species occurs in natural ponds over ironstone outcrops (known as canga) on flat terrain, where males call from the floating vegetation.

Key words: Sphaenorhynchus canga sp. nov., advertisement call, tadpole, Espinhaço Range, Iron Quadrangle, morphol- ogy,

Introduction

The Neotropical hylid Sphaenorhynchus Tschudi is a putative monophyletic taxon phylogenetically related to , , , , and (Faivovich et al. 2005; Wiens et al. 2006; Wiens et al. 2010; Pyron & Wiens 2011). Despite the many morphological synapomorphies that have been suggested for the genus (Duellman & Wiens 1992; Faivovich et al. 2005; Araujo-Vieira et al. 2015), its monophyly has been tested on the basis of a limited taxon sampling (S. dorisae, S. lacteus and S. orophilus; Faivovich et al. 2005; Wiens et al. 2006; Pyron & Wiens 2011), and relationships among its species remain uncertain. Sphaenorhynchus includes 14 small greenish treefrogs (Frost 2015), three of which are widespread throughout the Amazon basin [S. carneus (Cope), S. dorisae (Goin), and S. lacteus (Daudin). is also present in northeastern Brazil (States of Maranhão and Piauí; Caramaschi et al. 2009; Benício et al. 2011) and Trinidad (recorded as Hyla orophila by Kenny 1969)]. One species, S. platycephalus (Werner), is known solely from the poorly preserved holotype originating in “South America” (Harding 1991). The remaining 10 species [S. botocudo Caramaschi, Almeida & Gasparini, S. bromelicola Bokermann, S. caramaschii Toledo, Garcia, Lingnau & Haddad, S. mirim Caramaschi, Almeida & Gasparini, S. orophilus (Lutz & Lutz), S. palustris Bokermann, S. pauloalvini Bokermann, S. planicola (Lutz & Lutz), S. prasinus Bokermann, and S. surdus (Cochran)] are distributed in the Atlantic Forest, from the northern portion of the State of Rio Grande do Sul to the State of Pernambuco (Frost 2015).

96 Accepted by V. Orrico: 6 Nov. 2015; published: 21 Dec. 2015